Table 4.
Characteristics between cycles reaching live births or failing to have live births in the overall population after propensity score matching.
| Characteristic | LB group | Non-LB group | P value |
|---|---|---|---|
| (n=482) | (n=453) | ||
| Age (years) | 29.9 ± 3.7 | 30.8 ± 4.2 | <0.001 |
| Infertility type, n (%) | 0.075 | ||
| primary | 278 (57.5) | 235 (51.9) | |
| secondary | 204 (42.3) | 218 (48.1) | |
| Duration of infertility, n (%) | 0.729 | ||
| 1-2 | 139 (28.8) | 125 (27.6) | |
| 3-5 | 282 (58.5) | 263 (58.1) | |
| ≥6 | 61 (12.7) | 65 (14.3) | |
| Cause of infertility, n (%) | 0.513 | ||
| female | 233 (48.3) | 222 (49.0) | |
| male | 37 (7.7) | 32 (7.1) | |
| combined | 181 (37.6) | 159 (35.1) | |
| unknown | 31 (6.4) | 40 (8.8) | |
| BMI (kg/m2) | 21.2 ± 2.9 | 21.3 ± 2.8 | 0.843 |
| Basal FSH (mIU/mL) | 7.5 ± 2.1 | 7.9 ± 2.6 | 0.025 |
| Basal E2 (pg/ml) | 51.0 ± 22.9 | 51.0 ± 22.2 | 0.984 |
| AMH (ng/ml) | 5.3 (3.4-8.7) | 4.4 (2.5-8.5) | <0.001 |
| Endometrial thickness (mm) | 9.9 ± 1.7 | 9.7 ± 1.9 | 0.127 |
| Embryo developmental stage, n (%) | <0.001 | ||
| D3 | 121 (25.1) | 180 (39.7) | |
| D5/D6 | 361 (74.9) | 273 (60.3) | |
| Number of transferred embryos | 1.8 ± 0.4 | 1.8 ± 0.5 | 0.052 |
| Number of good-quality embryos | <0.001 | ||
| 0 | 113 (23.4) | 195 (43.0) | |
| 1 | 227 (47.1) | 181 (40.0) | |
| 2 | 142 (29.5) | 77 (17.0) | |
| Ovarian cysts formation | 0.204 | ||
| no | 312 (64.7) | 311 (68.7) | |
| yes | 170 (35.5) | 142 (31.3) |
LB, live birth.